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Question As-per to the law of reflection the angle of reflection is equal to the angle of incidence. An angle is at all times an angular separation between two planes a direct
An ice-skater with a moment of inertia of 1.1 kg/m2 starts to spin with her arms extended. After 25 s, she has an angular velocity of 15 rev/s. What is the net torque acting on
Question 1. Discuss the physical characteristics of an X-ray beam. Write a note on factors influencing the quality and intensity of the X-ray beam 2. Explain the constructio
A girl throws a 0.1 kilogram ball at a wall. The ball hits the wall perpendicularly with a velocity of 5 meters per second and then bounces straight back with a velocity of 4
the center of oscillation of a meter stick suspended about a transverse axis is located at 10 cm mark. determine at what other positions the meter stick could be suspended and have
Q. What is neutral temperature? Maintain the temperature of the cold junction constant the temperature of the hot junction is gradually increased. The thermo emf increase to a
Until the time of Einstein, mass and energy were considered as two different physical quantities. But in 1905, with the help of postulates of the special theory of relativity Einst
A ray of light XY strikes a surface of a mirror ABCD at point P. a) Determine the path of the incident ray X-Y-P and the reflected ray P-Z and show this path in all views. (Hin
What is larger the force the earth exerts on us or the force you exert on the earth? A non-scientist's initial stab at this: If you are talking about gravity, they are equivale
A boy is standing on an elevator which is travelling downward with constant velocity of 30 meters per second. The boy throws a ball vertically upward with velocity of 10 meter
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